A critical review on in situ reduction of graphene oxide during preparation of conducting polymeric nanocomposites

Mural, Prasanna Kumar S.; Sharma, Maya; Madras, Giridhar; Bose, Suryasarathi

doi:10.1039/c5ra02877a

Cited by 44 publications

(28 citation statements)

References 52 publications

(92 reference statements)

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“…6 Moreover, there should be a wt% point of percolation in the composite at which there will be a significant l augmentation. 9,[11][12][13][14] Our group recently introduced the covalently grafted GNP into polymer matrix for eliminating the ITR. 9 To the best of our knowledge, similar results have not yet been realized in graphene-based polymeric composites.…”

Section: Introductionmentioning

confidence: 99%

Enhanced thermal conductive property of polyamide composites by low mass fraction of covalently grafted graphene nanoribbons

et al. 2015

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High thermal conductive polyamide-6 (PA6) composites based on graphene nanoribbons (GNR) were prepared by an in situ polymerization process and thermal reduction progress. The covalently grafted GNR structures allowed for significantly reducing the number of thermal contacts between GNR layers, leading to the more efficient percolating thermal paths in polymer matrix. As a result, the thermal conductive property of the PA6/GNR composites was significantly improved at a relatively low GNR loading. At GNR mass fraction of only 0.5 wt%, 165% and 95% enhancement of the thermal conductivity of the composites in in-plane and through-plane directions, respectively, was obtained. † Electronic supplementary information (ESI) available: TGA analysis, TEM/SEM images, tests for intrinsic viscosity and molecular weight for PA6 and PGR and comprehensive comparison on the improvement in thermal conductivities. See

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Section: Introductionmentioning

confidence: 99%

Enhanced thermal conductive property of polyamide composites by low mass fraction of covalently grafted graphene nanoribbons

et al. 2015

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“…Considering that 96 h of oxidation reaction seems to damage the graphitic structure of EG excessively, shorter reaction times (24,48, and 72 h) were evaluated with the purpose of reducing the defects in the graphene sheets obtained after thermal reduction. However, after thermal reduction of the GO samples at 1000°C, the Raman spectra showed no significant differences, when compared with using an oxidation time of 96 h (see Figure 6).…”

Section: Reduced Graphene Oxide Obtained From Expanded Graphitementioning

confidence: 99%

“…Small amounts of KCl were added to minimize the risk of explosion, which can be caused by the ClO 2 gas. The reaction was allowed to proceed over different intervals of time (24,48, 72 e 96h). On completion of the reaction, an aqueous HCl solution (10% v/v) was added to the suspension in order to remove sulfate ions.…”

Section: Graphite Oxide Synthesismentioning

confidence: 99%

“…Diffusion coefficient calculations suggest that there is a critical temperature of 550 ºC that must be exceeded for exfoliation to occur 23 . The present work aims to develop a methodology for obtaining large quantities of few layer reduced graphene oxide from graphite at a low cost, while presenting good quality and a reasonable amount of oxygen, which could be used as nanofiller for composites 24 . Since the starting material plays an important role, we decided to compare two materials: graphite flakes (FK) and expanded graphite (EG).…”

Section: Introductionmentioning

confidence: 99%

“…The oxidation process used was the Staudenmaier 10 method. Various reaction times were tested (24,48, 72 e 96h). Thermal reduction processes at 600, 700, and 1000 °C, in different atmospheres (normal and inert), were also investigated.…”

Section: Introductionmentioning

confidence: 99%

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Few Layer Reduced Graphene Oxide: Evaluation of the Best Experimental Conditions for Easy Production

et al. 2016

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This work aimed to produce graphene oxide with few graphene layers, a low number of defects, good conductivity and reasonable amount of oxygen, adequate for use as filler in polymeric composites. Two starting materials were evaluated: expanded graphite and graphite flakes. The method of oxidation used was the Staudenmaier one, which was tested over different lengths of time. No appreciable differences were found among the oxidation times and so the lowest oxidation time (24 h) was chosen as the most adequate. An investigation was also conducted into suitable temperatures for the reduction of graphite oxide. A temperature of 1000 ºC gave the best results, allowing a good quality material with few defects to be obtained. The reduction was also evaluated under inert and normal atmosphere. The best results were obtained when the least modified material, e. g., graphite flakes, was used as a starting material, oxidized for 24h and reduced at 1000 ºC for 30 s in a quartz ampoule under a normal atmosphere.

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Graphene Oxide: A Unique Nano‐Platform to Build Advanced Multifunctional Composites

Girão

Pinto

Bessa

et al. 2016

Advanced 2D Materials

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A critical review on in situ reduction of graphene oxide during preparation of conducting polymeric nanocomposites

Abstract: In situ reduction of graphene oxide during preparation of conducting polymeric nanocomposites.

Cited by 44 publications

References 52 publications

Enhanced thermal conductive property of polyamide composites by low mass fraction of covalently grafted graphene nanoribbons

Enhanced thermal conductive property of polyamide composites by low mass fraction of covalently grafted graphene nanoribbons

Few Layer Reduced Graphene Oxide: Evaluation of the Best Experimental Conditions for Easy Production

Graphene Oxide: A Unique Nano‐Platform to Build Advanced Multifunctional Composites

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